Single 40 IDF Intake Build

[DesertSasquatchXploration]

Love my bored out 34PICT but its time to move on, getting bored with the stock setup.
Knock-off IDF from Ebay stripped it down cleaned all passages, Srcnonized the butterfly's, set the float level. Did a homebrewed vent extension along with idle jet extensions.

Using 3/4 .070 wall tube for the heat risers and my basic manual bender along with my 3 times rebuilt Wilton bandsaw it still cuts straight damn thing wont die.

Bought a steel flange off Ebay and a 1.5inch .060 wall bend off summit.

Using a radius tool blended the main down tubes on the lathe, a small ADJ wrench time and patience got a nice fit on the base flange. DO not run a lathe with this much stick out its extremely dangerous my lathe is small im forced to do stupid things

[NJ John]

Cool, but I would have been more excited to see you building an intake for a carter 1bbl. I know you have considered it it the past.
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1973 standard, yellow, lowered, 3” narrowed front, 1600 blo-thru turbo w/single dell 15.4@86, so far
11.41 et buggy. Long gone
Let’s go O’s! Let’s go O’s!
https://www.youtube.com/@AirSpooledGarage

[DesertSasquatchXploration]

Yea a single 40mm carb would be nice. The china carter copy has a few issues that cant be fixed and a real one is 300+$ its rebuilt but with a sloppy worn throttle shaft. I keep checking the online inventory for junkyards near me not a single 1980s F150 with the 300.

[oprn]

That is a South Bend isn't it? Looks very familiar.

Just a thought here, I would be very uncomfortable with the switch back there. If anything goes left and is spinning out of control... you are going to have to reach past it to shut the machine off... you have some large arteries on the underside of your upper arm...
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We had the stone age, the bronze age, the industrial age and now we are in the age of mass deception and mind control for corporate profit. (The mass media age)

[DesertSasquatchXploration]

Switch is relocated to the front under the bench that one is not connected yes very dangerous spot indeed its a 1940 South-Bend with an 1915 General electric cast iron motor. Torque monster it has Bushings with a felt pad you oil every so often

[NJ John]

I saw a guy with a Rochester monojet, once. It seemed to be working well.
_________________
1973 standard, yellow, lowered, 3” narrowed front, 1600 blo-thru turbo w/single dell 15.4@86, so far
11.41 et buggy. Long gone
Let’s go O’s! Let’s go O’s!
https://www.youtube.com/@AirSpooledGarage

[BFB]

What a great thread! cant wait to see the final product

Aaaand the comment “ why ddint you just go with duals??” In 3…2…1…
_________________
Forced induction can overcome a lot of obsticles that gets in it's way
"You are the Engineer and the Mechanic.  
Build it your way not the way someone else does it. Their way might not work for you." - clonebug
An interesting thing happens in forums where everyone starts parroting the same thing and "common knowledge" takes over.
“ The monkey see monkey do mentality seems to run deep in VW people. "Gene Berg said it was so 30 years ago so thats the way it is" “ - bdkw1

[modok]

Why didn't you just use duals?

[QRP]

WOW you even gonna have heat risers.
AWESOME

[DesertSasquatchXploration]

Turns out the flange was 1/16th to wide carb wouldn't fit on the studs checked online to find a blueprint for the bolt pattern the china carb was spot on what the hell! Had to cut the flange wont buy anything from that eBay seller again. Gotta love the old 22.5 deg pie cut helped get the heat riser around that tight curve not the best flow but it will work just fine. CB performance has a crude 90deg angle flow path with pipe plugs and it works so Im told. My GF got me the Bi material Evolution miter saw for Xmas its amazing everybody needs one they are great!!!!

[NJ John]

Looking good.
_________________
1973 standard, yellow, lowered, 3” narrowed front, 1600 blo-thru turbo w/single dell 15.4@86, so far
11.41 et buggy. Long gone
Let’s go O’s! Let’s go O’s!
https://www.youtube.com/@AirSpooledGarage

[esde]

Make sure you get one of those heat risers connected to a part of the exhaust where it will pull a good vacuum. It makes a big difference in how well they work
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modok wrote:
Bent cranks are silent but gather no moss. I mean, ah, something like that.

[Millionmph]

I love this, its called engine-oooo-ity LOL

I got a single 40 setup im working on but doing things just a little different, when i get to it after i finish cleaning/painting tins for new motor ill post it

[BFB]

Looks like you got your flange lined out, but i was going to say that i have CAD’ed a base for IDF’s and 3D printed some as 1/4” templates, if you wanted one to be able to cut / have a new flange cut. I know for a fact these are accurate, nice thing about being able to print them
_________________
Forced induction can overcome a lot of obsticles that gets in it's way
"You are the Engineer and the Mechanic.  
Build it your way not the way someone else does it. Their way might not work for you." - clonebug
An interesting thing happens in forums where everyone starts parroting the same thing and "common knowledge" takes over.
“ The monkey see monkey do mentality seems to run deep in VW people. "Gene Berg said it was so 30 years ago so thats the way it is" “ - bdkw1

[DesertSasquatchXploration]

Made some top IDF gaskets that have holes for the idle jet extensions. Cricut machines are robust not just for old lady crafters. Car guys can use them too.

[DesertSasquatchXploration]

Back from Easter. Got a fair amount done, it mounts like stock using the upper case stud. I want the intake to come out with the generator and shroud in place so I did a slip connection. Routing the heat riser tubes is more time consuming then I thought but it fits nice still have to finish the top 180 deg connection under the carb that's for next time.

[slayer61]

That's effing amazing! The talent that this group has knows no bounds.
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[chrisflstf]

What are your plans for linkage?. Something like this might work:

[DesertSasquatchXploration]

That looks nice very clean.

This is my universal linkage kit
Picked out anything useful. I found a 1/2 rod of O1 tool steel so that sweet! I'm going to buy some split clamp collars online had good results with them in the past. I also like the bike chain linkage idea.

[BFB]

After you get this one done you aughta make an intake for a DCOE. I have an old one but you dont see them very often
_________________
Forced induction can overcome a lot of obsticles that gets in it's way
"You are the Engineer and the Mechanic.  
Build it your way not the way someone else does it. Their way might not work for you." - clonebug
An interesting thing happens in forums where everyone starts parroting the same thing and "common knowledge" takes over.
“ The monkey see monkey do mentality seems to run deep in VW people. "Gene Berg said it was so 30 years ago so thats the way it is" “ - bdkw1